print("WATER STORAGE TUB LEVEL SENSOR")

# Import necessary module/libraries
import hcsr04  # Ultrasonic sensor library
from utime import sleep

# Create an object called ultrasonic_sensor using OOP (Object Oriented Programming)
ultrasonic_sensor = hcsr04.HCSR04(trigger_pin=13, echo_pin=27, echo_timeout_us=500*2*30)

while True:
    # Measure the water level
    level_in_cm = ultrasonic_sensor.distance_cm()  # Use when you need a decimal point number
    level_in_mm = ultrasonic_sensor.distance_mm()  # Use when you want a whole number

    # Display the water level values on Serial Monitor
    print('The water level in the water tank is :', level_in_cm, 'cm')
    print('The water level in the water tank is :', level_in_mm, 'mm')
    print('---------------------------------------------')
    print('\n')

    sleep(5)